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http://dx.doi.org/10.5293/KFMA.2005.8.1.016

A Method of ROL Improvement for the Motor Operated Gate Valve Operated in the High Differential Pressure Condition  

Kim, D.W. (한전 전력연구원)
Yoo, S.Y. (충남대학교 기계설계공학과)
Publication Information
The KSFM Journal of Fluid Machinery / v.8, no.1, 2005 , pp. 16-22 More about this Journal
Abstract
This paper presents the method of ROL(Rate Of Loading) improvement for the Motor Operated Gate Valve operated in high differential pressure condition. ROL is one of the most important evaluation parameters for the valve ability. It is close to correlation in stem factor (SF) and appears different value by the differential pressure of fluid. ROL and SF are analyzed by the static test and dynamic test. The obtained result show that the modification of stem factor is very important factor for the ROL improvement. In order to obtain the same value of SF between static and dynamic test, stem and stem nut should be combined appropriately by the repetition test.
Keywords
Motor operated valve; Differential pressure; Rate of loading; Stem factor; Static test; Dynamic test;
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